These contemporary one inch advertising marbles started showing up in the 1980s. The first ones I bought were Coke and Pepsi. Now they are everywhere and are used as business cards, to commemorate birthdays, anniversaries and marble shows.
Four Marble Tournament Medals, two are not dated. One says Trenton Times award and one just says Marble Champ. The other two are from the National Marble Tournament dated 1930 and 1941.